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Old 01-16-2008, 11:00 PM   #1
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Default lrp 7,5 verctor x11 ---->

is it too weak for a bj4we,im running on a small ,tight indoor track. my speed is a lrp sphere tc with a maxxamp 5500...our stretch is not really long...70 feet maybe a bit more or less..so...im just not sure witch one between 5,5 6,5 or 7,5...6,5 are B-O so 5,5 or 7,5?? thx....dont need something too crazy you know..you win race on 4 wheels not on 2!! thx
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Old 01-17-2008, 02:36 AM   #2
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Originally Posted by mccoy View Post
is it too weak for a bj4we,im running on a small ,tight indoor track. my speed is a lrp sphere tc with a maxxamp 5500...our stretch is not really long...70 feet maybe a bit more or less..so...im just not sure witch one between 5,5 6,5 or 7,5...6,5 are B-O so 5,5 or 7,5?? thx....dont need something too crazy you know..you win race on 4 wheels not on 2!! thx
get a orion 6.5 vortex, plenty fast for that size track. very reliable motors too.http://www.teamorion.com/Products/Motors/Brushless
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Old 01-17-2008, 03:37 AM   #3
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7.5 is more than enough.
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Old 01-17-2008, 04:06 AM   #4
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7.5 should be more than ample, it will get you out of corners a lot quicker because you will be actually putting the power down.

Have a look at the worlds recently held in Japan and a lot of the drivers were running 7.5 equivalents
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Old 01-17-2008, 05:35 AM   #5
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have a look at getting the optional sintered rotor and fitting it to your 7.5, you will notice a massive performance increase!

what gearing are you running? I would look at running something like 17/81 or 16/78 (for standard 7.5 with bonded rotor)

if you put the sintered in, gear up 2 teeth on my recomendation
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Old 01-17-2008, 06:25 AM   #6
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I run on a small track with a 60 foot straight (indoor). I have been running the VEctor 6.5--with sintered rotor in my BJ4 WE. I think its just about perfect for the track size. Its worth getting the sintered rotor--better brakes and a bit more low end torque with similar top end. 7.5 would be a good choice as well. Many of the guys in 4wd run Orion or NOvak 7.5 motors.
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Old 01-17-2008, 08:13 AM   #7
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okay guys thanks to everyone for taking the time to reply my post..i'l eaning toward a 7,5 with the ceramic bearing and as soon as sintered rotor will be available i'll get it for sure! thx to all have a good week end! a+
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Old 01-17-2008, 08:14 AM   #8
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I run a 7.5 in my ZX5 at my track. We have a long back straight and it is plenty of motor. I think you will be fine with a 7.5.
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Old 01-17-2008, 09:10 AM   #9
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I run a non sintered 6.5 with LiPo on a track about that size. It's a little too much. I will be dropping to a 7.5 when I get the chance.
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